eutectic - a eutectic has a definite composition and is formed from the liquid phase at a definite temperature, the so-called eutectic temperature (where two phases are concerned). An alloy is described as hypereutectic if the proportion of alloy substances is greater than the proportion corresponding to a eutectic without its properties dissipating in the solid state. With reversed proportions and equivalent conditions, the alloy is said to the hypoeutectic., eutektilise koostisega sulam